Casting metal



L t e e h s m 9 e h s 2 M ET B M G n AS .A JO m d 0 M 0 m Patented July30,1895.

WITNESSES (No Mddel.) 2' Sheets-Sheet 2.

J.A .POTTER. GASIING METAL.

N0; 543,700. Patented July 30, 1895.

mvslifon wrmss'ses U ITED STATES PATENT OFFICE.

JOHN A. POTTER, OF PITTSBURG, PENNSYLVANIA.

CASTING M ETAL.

SPECIFICATION forming part of Letters Patent No. 543,700, dated July 30,1895. Application filed August 19,1893. Serial 10.4%,511. mammal.)

To aZZ whom it may concern.-

Be it known that I, JOHN A. POTTER, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Casting Metal, of which the following is a full, clear,and exact description, reference being had to the accompanying drawings,forming part of this speci fication, in which Figure 1 is a top planview of my improved apparatus. Fig. 2 is a vertical sectional view onthe line II II of Fig. 1, and Fig. 3 is a detail view of the circularbase-plate.

My invention relates to the production of small castings, and moreparticularly small steel ingots, and is designed to produce thesecastings without pipes or blow-holes in a'rapid and inexpensive manner.

In the drawings, 2 represents an' annular casting, forming a base-plate,resting upon the foundation. Upon this base-plate rests the annularbearing-plate or ring 3, having a broad head provided with a circulargroove on its upper face. Fitting snugly around this ring is the annularband 4, having'a projecting flange 5 for about half its perimeter, thisflange serving as a support for the castings or ingots. Carried upon aseries of balls resting in the groove of the bearing-plate 3 is thecircular carrier 6, having a registering-groove upon its under side, anda downwardly-projecting inner flange 7, having a circular rack 8thereon, with which engages the drivingpinion 9, driven through suitablegearing 10. Supported upon the carrier 6 by an inner projecting shoulderis the circular mold-ring 11, provided with a series of matrices, whichpreferably taper upwardly, as shown. At one side of the mold-ring issupported the fountain 12, having a bent passage leading to acastinggate 13 in the flange 5, this gate being composed of a perforatedfire-brick or of similar ing an incomplete ingot and doing away with thechilling ofthe metal in the fountain. By this means I can'use thefountain for six or seven successive hours instead of being renewedafter each cast, as was heretofore necessary, the fountain being brokenup and the chilled metal removed.

In order to prevent air being siphoned into the mold bythe exposedstream of metal issuing from the ladle and entering the fountainI-preferably make an air-tight joint in any suitable manner, by lutingor otherwise, between the ladle and fountain. At the opposite side ofthe carrier, upon a bridge 18, is supported a motor-cylinder 19,carrying a downwardly-acting ejector 20, which registers with themold-orifices and forces the ingots downwardly, they falling upon theincline 21 and sliding therefrom to the driven rollers 22, by which theyare removed. The band 4 may be forced securely up against the bottom ofthe mold-ring by means of the keys 23, passing through slots therein andresting upon the base-plate, these keys passing through elongatedrecesses in the inner ring 3. Covers 24 are provided for the molds,these being removed soon at'ter the molds are filled and replaced afterthe ingots are ejected.

The operation is apparent. The mold-ring being rotated intermittently,as each mold is filled it passes to one side, and the ingot, slidingover the supporting-plate, is cooled by the time it reaches the ejector.

The advantages of my invention are many. The'oxygen of the air, whichhas been heretofore drawn into the molds with the stream of metal, andcombining with the carbon in the molten metal causes the blow-holes andpipes, is excluded in the practice of my invention, and solid ingots areproduced. More over, I can regulate the descent of the metal and thepouring into the mold, since by shutting down the stopper of the ladlethe flow of the metal is stopped. I may thus stop the flow as each moldis filled and prevent any liability to leakage and forcing out of themetal.

The fountain and molds are easily drained of surplus metal and slag, andthe whole operation is rapid and inexpensive, while a superior productis obtained.

Many modifications will suggest themselves to those skilled in the artwithout departure from my invention, since What I claim is-- 1. Thecombination with a horizontal moldring having a series of verticalmold-cavities extending through it, of a stationary plate extendingbeneath a portion of the series and over which the cavities move, saidplate having a gate arranged to successively register with themold-cavitiesg substantially as described.

2. The combination with a horizontal moldring having a series ofvertical mold-cavities extending through it, of a stationary plateextending beneath a portion of the series and over which the cavitiesmove, said plate having a feeding orifice lined with refractory material and arranged to successively register with the mold-cavities;substantially as described.

3. The combination with a horizontal moldring having a series ofvertical mold-cavities extending through it, of a stationary plateextending beneath a portion of the series and over which the cavitiesmove, said plate having a gate arranged to successively register withthe mold-cavities, and a vertical fountain having a lateral runnerleading to the gate; substantially as described.

4. The combination with a horizontal moldring having a series ofvertical mold-cavities extending through it, of a stationary plateextending beneath a portion of the series and over which the cavitiesmove, and having a gate, and an ejector separate from the plate andarranged to eject the castings from the cavities successively as theypass in front of it; substantially as described.

5. The combination with a horizontal moldring having verticalmoldcavities, of a stationary plate extending beneath it a portion ofits circumference, a gate in said plate, and a vertically actingejector, arranged to register successively with the mold cavities substantially as described.

In testimony whereof I have hereunto set my hand.

JOHN A. POTTER.

Witnesses:

PHILIP Y. PENDLETON, H. M. Conwm.

